out of curiousity, I just looked at the portion of the law cited. the quoted language is no longer current. The current version is broader:
"(A) In general.-Any alien who a consular officer or the Attorney General knows, or has reasonable ground to believe, seeks to enter the United States to engage solely, principally, or incidentally in-
(i) any activity (I) to violate any law of the United States relating to espionage or sabotage or (II) to violate or evade any law prohibiting the export from the United States of goods, technology, or sensitive information,
(ii) any other unlawful activity, or
(iii) any activity a purpose of which is the opposition to, or the control or overthrow of, the Government of the United States by force, violence, or other unlawful means, is inadmissible."
the requirement of an "organization" is apparently gone... but still, my question remains, where in Islamic teachings is the unlawful overthrow of the U.S. government mandated by the religion? I've looked around at the web sites which attempt to quote Islamic texts, and all I see are really badly interpreted phrases taken out of context. Like Christianity I think, the core of Islamic teaching is about spirituality, not governmental authority.
by the way, reading through that law, its also pretty obvious that a bunch of crap got added after 911 as there are lengthy sections dealing with the subject of 'terrorism'. Somehow Netanyahu keeps getting through the dragnet though, must be a flaw somewhere in the system...